"IT PAYS TO KNOW THE WHYS AND WHEREFORES OF DRAINS, VENTS, AND TRAPS — AND TO STAY FRIENDS WITH YOUR PLUMBER"

JLC ??NOVEMBER 1991
THE DOWN &
DIRTY
ON DWV
It usually begins something like this: You call a plumber
in to look at a job; you just want to confirm the specs
and discuss faucet styles and fixture colors…Then your
plumber says, "Of course, this will need a vent running
up through that wall to the roof." Your eyes go wide.
You've already given a price to the customer and now
you have to cover additional plumbing, carpentry, and
finish work. At this point, you don't want to ask why;
you don't especially want to hear the answer.
The purpose of this article is to help you avoid such
surprises. First I'll explain how